K40
ICD-10Non-billable categoryInguinal hernia
Official ICD-10-CM descriptor (FY2026)
Inguinal hernia
K40 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- bubonocele
- direct inguinal hernia
- double inguinal hernia
- indirect inguinal hernia
- inguinal hernia NOS
- oblique inguinal hernia
- scrotal hernia
More specific codes under K40
- K40.0Bilateral inguinal hernia, with obstruction, w/o gangrenecategory
- K40.1Bilateral inguinal hernia, with gangrenecategory
- K40.2Bilateral inguinal hernia, without obstruction or gangrenecategory
- K40.3Unilateral inguinal hernia, with obstruction, w/o gangrenecategory
- K40.4Unilateral inguinal hernia, with gangrenecategory
- K40.9Unilateral inguinal hernia, without obstruction or gangrenecategory
Where this code sits
- Block
- Hernia (K40-K46)
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.